Yes, I saw it before at Bob Vernons house in Houston. I just went and looked at an official copy of the Zapruder film and at normal speed it does look like the driver turns and fires a pistol shot at JFK's head. However, at slow motion, it does not. Take a look at the Zapruder clip on your entry in this thread and tell me what you think. The drivers head is facing JFK at the moment the bullet strikes him and it " appears " as if he has a .45 Auto in his left hand. I'd be interested in your reaction.
I don't think so, but one theory I've heard is that the driver knew what was going on and was just looking back to make sure Kennedy was dead. Those who suggest that point out the fact that he doesn't start speeding up until after he sees Kennedy's head explode.
Of course, the most logical explanation is that he heard or felt a commotion, turned around, and then hit the gas when he saw what was actually happening.
I used to think Oswald acted alone. But after talking to my uncle, I'm convinced there was some kind of conspiracy, though not as big and elaborate as many people believe. By definition, you can have a conspiracy with only two people.